Malicious PDF — malware analysis report

Static analysis result for SHA-256 f216ab0b50bd1e37…

MALICIOUS

PDF

70.5 KB Created: 2021-03-02 02:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f840bfbba58ad2aff0f4ac782aea5577 SHA-1: 7a4a734dc9b389f4c7212b7dc2e1a3a2960f2539 SHA-256: f216ab0b50bd1e378103406a1a7ed95f21370edb5122db0425256ef014d338da
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'ponafet.ru', which is likely used to host a malicious payload or phishing page. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/strik?utm_term=troy+bilt+tb360+bag
    • http://dilawiputonu.mypressonline.com/sanidixafez.pdf
    • https://cdn.sqhk.co/sovokeduseb/NjfiMHD/lalamorapivuriwedal.pdf
    • http://gixipures.sportsontheweb.net/how_to_clean_black_and_decker_convection_oven.pdf
    • http://tiwimifozukimu.medianewsonline.com/logedumipetobijitojan.pdf
    • https://cdn.sqhk.co/nalujujoso/jgPhaje/machine_gun_simulator_freestyle_lyrics.pdf
    • http://digovin.getenjoyment.net/58741990538.pdf
    • https://cdn.sqhk.co/noneniwetav/aNMFhaa/66784638483.pdf
    • https://cdn.sqhk.co/melipetoluf/gxhj5SH/kozinesajamemet.pdf
    • http://sitebomobegux.sportsontheweb.net/kigagoxagarim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jolunenafobuw/no_answers_only_questions_lyrics.pdf
    • https://s3.amazonaws.com/bupijila/giwusigijuxotosamesujo.pdf
    • https://s3.amazonaws.com/tufitijinexu/neremonotobovu.pdf
    • https://s3.amazonaws.com/luborinizu/zetagimoj.pdf
    • https://s3.amazonaws.com/gomaxod/android_browser_bookmark_folder.pdf
    • http://zevesijuduma.atwebpages.com/delirium_trilogy_book_4.pdf
    • https://s3.amazonaws.com/fofeguj/chrome_browser_for_windows_8._1.pdf
    • https://s3.amazonaws.com/kujesulad/69091594854.pdf
    • https://s3.amazonaws.com/belopudevuzuza/when_worlds_collide_movie_remake.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3a0.bin
98473b945b5ae389dd656cc300dd485e9b1c44c965844b35539ac8dda770aac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A0 5324 bytes
font_01_sfnt_off0000e5d5.bin
c6b2b04a18af5a353ba1e8720a6444e3f9bc94fa6cf3fe2a0afeb138f423f5a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D5 11688 bytes

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